merigo-labs
commented
1 year ago Hi @kevin-nemo74,
You need to add blockhash information to the transaction and serialize it with transaction.serialize().
Here's the updated section with comments trailing the added lines:
...
print('creating transaction');
final connection = web3.Connection(Cluster.devnet); // Connect to same cluster as adapter.
final blockhash = await connection.getLatestBlockhash(); // Get latest blockhash.
final transaction = web3.Transaction( // Add blockhash info to tx.
recentBlockhash: blockhash.blockhash,
lastValidBlockHeight: blockhash.lastValidBlockHeight,
feePayer: snd, // Your wallet address.
);
transaction.add(
SystemProgram.transfer(
fromPublicKey: snd,
toPublicKey: rcv,
lamports: web3.solToLamports(1),
),
);
final arr = [];
arr.add(transaction);
const config = web3.SerializeConfig(requireAllSignatures: false); // Allow wallet to sign tx.
final tt = transaction.serialize(config).getString(web3.BufferEncoding.base64); // Serialize tx to base-64.
print('creating transaction string $tt');
...Let me know if you need anything else.
Thanks! Merigo
kevin-nemo74
WilfredAlmeida
i tried sending sol from one wallet to another by creating a transaction using solana_web3 package and changing it to String before passing it to the signAndSendTransactions method i get request contains an invalid payloads entry error
import 'dart:convert'; import 'dart:typed_data';
import 'package:cloud_firestore/cloud_firestore.dart'; import 'package:firebase_auth/firebase_auth.dart'; import 'package:flutter/material.dart'; import 'package:solana_wallet_adapter/solana_wallet_adapter.dart'; import 'package:solana_web3/solana_web3.dart'; import 'package:solana_web3/solana_web3.dart' as web3; import 'package:solana_web3/programs/system.dart';
import '../dashboard/widgets/appBar.dart';
// 1. Create instance of [SolanaWalletAdapter]. final adapter = SolanaWalletAdapter( const AppIdentity(), // NOTE: CONNECT THE WALLET APPLICATION // TO THE SAME NETWORK. cluster: Cluster.devnet, );
class AuthorizeButton extends StatefulWidget { const AuthorizeButton({super.key}); @override State createState() => _AuthorizeButtonState();
}
class _AuthorizeButtonState extends State {
Object? out;
@override
Widget build(BuildContext context) {
return Scaffold(
bottomNavigationBar: GNavBar(
selectedIndex: 1,
),
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextButton(
onPressed: () {
// 2. Authorize application with wallet.
} }
here s my code if anyone can help !